Wu Xu, Zhang Jinjin, Zhang Yanheng. Design Method of Optical Phase Anti-Counterfeiting Mask Based on Two-Dimensional Barcodes[J]. Laser & Optoelectronics Progress, 2020, 57(21): 210604
- Laser & Optoelectronics Progress
- Vol. 57, Issue 21, 210604 (2020)
Fig. 1. Flowchart of G-S algorithm
Fig. 2. Anti-counterfeiting mask and decoding diagram under different quantization coding orders
Fig. 3. Block diagram of optical phase anti-counterfeiting mask encoding based on two-dimensional barcode
Fig. 4. Block diagram of optical phase anti-counterfeiting mask decoding based on two-dimensional barcode
Fig. 5. Flowchart of calculating threshold value by the maximum inter class variance method
Fig. 6. Simulation verification of optical anti-counterfeiting mask design method based on text information (quantization order: 8)
Fig. 7. Simulation verification of optical anti-counterfeiting mask design method based on image information
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Table 1. PSNR values under different quantization orders
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Table 2. Error correction levels for QR codes
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Table 3. Effect of quantization orders on the probability of errors
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